Electrical Engineering Interview Questions

Whta is earthing?What is the optimum value of Earth Pit?

5294

What is SMPS,How does it works?

12560

1.stranded resistance values of motors? 2.how to calculate the resistance values of single phase and 3phase motors?

Bell, L&T,

6147

if transformer winding burn on dc supply then why not alternator rotor winding please post answer on y.sakhare@rediffmail.com

8715

through which medium return supply given to alternator please answer in details

4124

If a Power Transformer Fails and the transformer manufacturer suggest that "Do all electrical test on the transformer?". What are the test to be conducted in this condition?

5881

What is the method of Tan delta test for power Transformes and why it is required.

5037

What is the method & formula of Fault level calculation in power Transformesr.

5304

How to calculate the sag on transmission Lines.

2456

where we use compound motors in real time and why?

TATA,

4570

How much resistance between neutral earthing and body earthing of Power transformer?

3633

in the thermal power plant, why we use the condenser (for cooling the steam) when we have to heat the steam again. i mean why we are cooling the steam,

8928

what is the simple meaning of harmonics?

5546

what's the meaning of the negative going half cycle in the circuit containing a bulb and a switch in series with a input ac source. i mean what happens in the -ve cycle. the dir. of current changes or any other thing. if dir. changes then why we use fuse in only phase wire.

4385

I have 30KW Motor Starter Panel, System voltage is 480V, So i have to convert voltage 480 to 220V to give the contactor coil. How i can select control transformer, Which rating transformer i can use this panel, what is the procedure, please tell me.

4553

Un-Answered Questions { Electrical Engineering }

Is it possible to operate a synchronous 2-poles turbogenerator with a still-in-place faulted bar but electrically disconnected ???? If yes, should I act on the other phases as well ???

1494

What is the disadvantage in proportional controller?

675

What is difference between mcb and mccb.

688

. What is Electrical Life & Mechanical Life of Circuit Breaker? 2. What is Electrial Life & Mechanical Life of Magnetic Contactor? 3. What is RCD, RCCB & RCBO? 4. What is the Between defferance of RCD, RCCB & RCBO?

2875

Initially, when the input is not equal to the output â€” what type of response is this?

707

How capacitor improves pf

1256

what is the acceptable value of TAN DELTA and dissipation factor for 11kV, 1.75HP Motor?.

3758

WHTA IS LIMT OF LEAKGE CURRENT OF 11 KV 1 CORE 1000SQ.MM. XLPE CABLE.LOAD ON CABLE IS AROUND 600AMP .LENGTH 500 MTRS.

1722

Why different Pressure switch used in marine boiler water circulation system

1364

in single phase converter, the no.of scr's conducting during overlap a)1 b)2 c)3 d)4

1680

why the check zone and main zone are used for Busbar Protn. scheem?

1704

How to Preparation of online test

1118

what is the main function of capacitors in mccs.

1309

which fault is severe and why?between lll fault and lllg fault which fault is severe and y?

2060

i want to know how to determine that a surge arrester work properly in 11kv system. and how to test a 12kv surge arrester

1729